Knowledge base for software setup, errors, and daily tool work.

Fix Microsoft Store Error 502 Bad Gateway After Update

After a recent Windows update, you open the Microsoft Store and see 'Error 502 – Bad Gateway'. Th...

Fix OneDrive Sync 'Connection Refused' Error

When OneDrive shows a 'connection refused' error during sync, it usually means the app can't reac...

Windows Defender Version Mismatch: Practical Fix Checklist

If you see a “version mismatch” error in Windows Defender (Microsoft Defender Antivirus), it usua...

Unlock a File Locked by System Command Prompt

You try to delete or move a file, but Windows says it's open in 'System' or 'Command Prompt'. Thi...

Fix Office 365 Token Expired Error in CMD